Apparatus for conserving motive fluid



W. BR FLANDEHS. APPARATUS Fon CoNsEm/ING Mo'rlvE FLUID. APPLIMHON FILEDJU-LY 6, i518.

: MQQXYMD Patented Deu. M, WZL

.A T T ORNE YS.

1BRS. U1? 'WLlINSBUlELG. PMINSYLVANIB.. ASSIGNOB, TOW'ESTING- tfl d.;MANUFACTURING C0.. .A CORPORATION OF PENNSYLVANIA 150B, CONSERVINGMOTXVE FLUH).

tlrtig'iiial application .To all eff/wm zz may conf-ern.:

lle it known that l. ll'snnns ll. -l"I..-\.\'Dens.

t a eltizen oty the, tinted htates. and a resident olill'ilkinshurg. inthe county ot .lille- Vgrl and State ot' lllennsylvania. have made waterheaters and particularly heaters which are continuouslgr or at timesduring their operation subjected topressures above atlor discharging'air and troncondensable Without Wasting steam.

, .iurther object. oit the invention is to duce a new and improved t'eedwater tingl system in which means are employed maintaining the pressureotl the steam .ly constant and in "which simple and improved means areemployed tor venting air or non-condensable zgases delivered to the edWater heater.

llt tfurther ohject is tdprndure a system `for tine' leed Water and torconserving the e 'lahle for heating the feed water. mproved means `areemployed for tir and noncondensable gases init ,ic l into the systemtvith the steam or the Water to he heated.

and other objects. which will be liii-arent throughout the further de-,ptimrot' my invention are attained by means of a leed water heatingsystem herein described and illustrated in the drawing' ac*A companying;and "forming a part `hereot'.

lnthe drawing lhave illustrated dia- Lejrannnatically a leed Waterheating system. which toi-fins an embodiment of my invention.

.rered to the feed T.vater heater suhstair Specicaton of .LettersPatent. Patinten@ Magg p3@ 192i ma .ruiy 22, i915, serial no. 41.22.Divided and una applicatie med July e,

' serial No. 243,656.

Inpower plants. orl similar install-ations, it is customary to deliverthe Steam eX- hausted from the steam driven auxiliaries to a feed waterheater. where it is employed 1n heating the Water prior to its deliveryto the steam generators. lt will he apparent that it' the exhaust steamso delivered to the heater is sutlicient-rn quantity to heatthe feedWater to a determined temperature durmg periods ot full load on thesteam gener'- ators. it will be in excess during periods ,of

light load. since the load on the generators l varies in approximatelydirect ratio to variations in the yload on the prime movers or mainpower developing units. Whereas the amount of steam exhausted from theauxiliaries remains substantially constant regardless of variations. inthe load on the prime movers. n the other hand. it' the number ot'auxiliaries. delivering exhaust steam to the feed Water heater. is soproportioned that the steam delivered to the heater during normal loadson the main power `units or prime movers. is just sutlicient to beeconomically employed in heating the feed Water.' there will not besulicient steam to raise the feed Water to the desired temperature whenthe main power units are developing maximum poujer.

ln order. therefore. to conserve the steam and to increase the ecoiomygof the entire plant or installation, means have been provided torautomatically delivering" the excess steam which cannot he etlicientlyemployed in'the'feed water heater to al power developing mechanism orsome other apparat-us in which the heat ot the? steam can be usefullyemployed. Means have alsobeen'employed t'or automatically augmentingrthe supply of heating steam by delivering additional steam to the heaterwhen .the nor mal source ot heating steam supply is insuflicienttomaintain the t'eedtvater at the el remoral'ot the air and othernon-condens atmospheric pressure.'

able fluids from the: heater Without dissipatino' heat energy.

tMy invention overcomes this difliculty, and, as illustrated, includes afeed water heater which is adapted to receive steam under pressure andis provided with a vent port for venting air or other non-condensablegases from the heater. The vent port communicates with apparatus ofsuoli capacity that it is capable of efficiently or economicallyemploying the fluid vented from the heater during the periods ofgreatest fluid pressure within the heater. ln the apparatusillustra-ted, the .means for utilizing the vented fluid is shown as anauxiliary heater vwhich operates to condense the steam vented from themain heater and which also abstracts '-heat from the air or othernoncondensable gases vented from the .ineiu heater. y

The illustrated embodiment of in y invention includes a prime 'mover ormain power developing unit 3,-Wh1ch is illustrated diagrammatically as asteam turbine, having aA low pressure stage 3a between two rotorsections 3 and 3c which are operated in series A by'high pressure steamentering the turbine at 3d and exhausing into a ,condenser e,

ivhichinay be of any type to which condens `img' Water is delivered bymeans of a pump 5,

through a pipe or passage 6, the

pump re c'eivingj water from a pipe 6.

I have illus- /trated diagrammatieally a Asteam turbine 7 Vfor drivingthe pump 5. This turbine receives steam through a pipe or passage 8 andthe steam* exhaust therefrom is delivered through a pipe or passage 9 toa receiver or exhaust main 10, with which the exhaust of other steamiven auxiliaries may communicate. I have also shown another auxiliaryturbine 7 arranged to discharge into the exhaust main 10 by means of apipe 9E.

A feed Water heater 11 is diagraininati1 cally illustrated in thedrawing and as shown receives heating fluid from the receiver 1.0through a passage 13 which is provided with horizontallyY disposedheater 11 is ofthe Contact type and coinprises a closed receptaclehaving an air vent connection 12 at one end and an inlet steamconnection 13 at the other end. #The vent connection communicates with aheater 14. of the surface type,--shown as' located above the Contactheater 1 1 and to which all of the Water to be heated is delivered priorto its delivery tothe surface .hls'iten As illustrated, the heater 14;is oi the surface or closed type and is air vent 15, which is shown aseonununioating With the atmosphere. lVater to be heated is delivered tothe heater 14 through a pipe 16, and after traversing;r the tubes lli ofthe heater 14, is delivered through a pipe 17 to the spray nozzles 18 ofthe It will be apparent to those skilled in the art provided with an'lie/:iter 11.

that various types of heaters may be einployed and that the details ofcoi'ietructii'in oic both the heaters .may he materially inediliedWithout in any way departing 'lroin the spirit or scope oi theiuventioil set ilorth by the appended claims. ln the drawing' l haveillustrated a condensate return pipe 14.- communicating with the heateril and with the heater 1l below the normal unter levelI of that heateuOther menus may be emploved for disposing of the Water of condensatioii, but Where an open communication such illustrated isemployed.y time heater lll should cient height to prevent Water Jfromheine' 'forced from the heater 11 into the healer lll.

The working passage ot' the turbine Il coinmunicates witlilthe receiverill through 'a syst-cm oi' piping;v lll. .fis illust/intel. lelie piuying' 1l) includes an ordinary; lore el" pressure regulating* valveconinionljiY lmou'n 'as e constant pressure or heat balance valve whichT. diagrammatically illustrated ai" E21. The valve 2l is so arrangedthat it 'will open in response to the pressure of the lluid in 'thereceiver l() and deliver lfluid therefrom to the turbine 3, when thepressure ".vitnin the receiver exceeds a determined pressure. 'lhc pipe19 also 'includes :i manually operati-xd valve 22 `for permaneiuilyshutting; oil" coni muuication between the turbine and the receiver Landthe receiver may and pre'crrihly will he provided 'with a Lvty or popolivalve lQQ such as is ordinariliy employed 'lor relieving; excessivepressure. The valve is also arranged to open in response to a dccreasein pressure within the receiver 10 and to admit augifineutingr 'Huid orsteam from thc workin;Y passage of the turbine Sl to the ceiver; Forthis reason., the piping 19 prete erahiv communicates with the workingpas sage of the turbine ai such :i point that tlie pressure norma lvexisting al' the point of connection is substantially equal to thepressure Which-it is desired to maintain Within 'the receiver 10.

Assume tor the purposes of description that 100,00() pounds et u'aierare to be heated per hour troni lo 216 lland that the receiver 10receives 20000 pounds of er haust steeni per hour frein the varil` issources communicating with it. Assume also that the constant i'iicssureor h it balance valve 21 is so adjusted that it will not open inreevonse to an excess pressure in receiver .l0 until the pre nrc in therece is equal to or exceeds 6 pounds ahso.. llnder Such conditions a pre1ere olf lll pounds absolute will he normally main tained in the heater11, and steam will ilove troni the heater through the vent' pipe lf. 'tothe heater 14 in which atmospheric pics` sure (14.7 pounds absolute) isan l duc to the vent 'llieing open lo hu i, phere.

we raised above he heater ."l a sulli- Y' beater lt.

Lanarte l tbe formation oli scale in tbebeater it and consequently asurface beater sucb ae illus trated may be employed. l'be Wateratteipassing tbrougb tbe beater it, isdeliyered to tbe beater 11, Wbereit is mined. Witb tbe steam entering;r tbe beater trono tbe receiver 10.ts a result of tbe mixture et tbe-steam and water approximately 1d,pounds ol steam itself heated to tfltlo Vl?. llnasn'iucb as only200ml-1000G pounds, z'. c. 12,000 pounds ot the available steain can beemployed in beatingr the feed water. tbe remaining 80d@ will cause theconstant pressure talee 2l to litt and tbe excess steam will bedelirered to tbe main porter developing.r nnit 3 and `will do usefulWork tberein in expanding' to con` denser pressure. lt will .be obviousthat Whenever there is more steam available tban can be condensed in tbctwo beaters ll and la that tbe pressure in tbe exbanst or re ceiver 10and in tbe beat-er 'll will be atleast equal to tbe pressure required tolitt or open soon as tbe pressure in tbe exhaust rnain or receiver l0falls below lo pounds absolute, it will open and deliver stearnv tronitbe main poner un it to tbe receiver and tbereby maintain approaiinatelylo pounds pressure in the receiver.

From tbe abone deocription it will be appaflent that by properlyproportioning tbe vent or passage 193 ot tbe beater ll, Witb respect totbe capacity oi tbe beater it, tbe

beater l1 will not only be properly rented,

but all of tbe Steam delivered to it will be ellicienty employed inbeating tbe leed on tei"u As is apparent from tbe above descri tion, tberent paseage 152 and actuating niecbanisin of tbe yalye itl sbould be soproportioned rbat tbeA yaly'e al will open and relieve' tbe pressure,nitbin tbe receiver l@ or beater' 1t, oben tbe pressure conditions aresnob tbat tbe rent passage l2 will pass more llunl tban tbe apparatusconininnicatiinhiv with 'it is capable ot eblectiy'ely utilirinpg. Wbilel bare shown tbe beater lt arranged to de0 liner tbe water pression,rtbrougb it to tbe beater 11, it willbe apparent that this Water nt tneybe utilized elaenbere after it is beated are condensed and tbc AWeberis' by tbe beater lll and tbat tbe beater 1l may ybe replaced'by anyapparatus capable ol utilining loir pressure fluid. lt will also beapparent tbat various changes. niodica tions, substitutions, additions.and omissions may be inade in tbe apparatus illustrated Withoutdeparting troni tbe spirit and scope ot tbe invention as set fortb bytbe appended claims. 4

Wbat il claire is:

t. ab teedwater beating system comprising Y a closed contact beater,ineans torsupplyng beating,- Hold to said beater, a surface beaterarranged above tbe Contact beater. a vent connection between tbeContactA and'surtacedensate troni tbe surface beater to the contactbeater. A. l i

2. t toed-'water beating system comprisingr a closed contact beater,means tor supplying steam to said beater, a surface beater arrangedaboye tbe contact beater, ,a continuously open vent connection betweentbe contact and surface beaters, a continuously open atmospheric ventfor tbe surface beater, means for passing Water successively tbrougb tbesurtace and contact beaters, and a connection tor draining condensatetrono tbe suritace beater to the contact beater.

3. A teednater beatingl surface beater, andnieans tor priming Water Ytbinngb tbe surface and con?u` successively tact beaters.

5. A teedwater beatingn system comprisingr a contact beater, means lorsupplying steain to one end tberoot, a surtaoe beater, a continuouslyopen yent'connection between tbe otber end ot" tbe contact beater andtbe snrlace. beater lor pasaingrnoneondensable pasos and a portion ottbeffsteana to tbe snrbien beater obere tbe beat tbereof is trans`lterred to tbe Water passing tbrougfb tbe surtace beater, tbe rentconnection baving sucb 130 p a compris- ,v ing a closed contact beater,means lor supplying stearn to said beater, la surface beater l Seeledepositing temperature,

ing a closed eonaet h emer, means communicating with one end of the.heater for sup plying steam thereto, a 'surface heater ranged above`the eontaet heater, a eonnu ously open vent connection" between theother end of the Contact heater and the sin face heater, and acontinuously open atmospheric vent for the surface heater.

7. A 'feedhater heating system eomprising ai closed Contact heater,means communicating with one en'd ef the heater Jfor supplying steamthereto, 2L Surface heater nrrenged above the Contact heater, :iContinuously open vent connection between the other end of the Contactheater, en etmos pherie vent for the surfaee. heater, and e geez/mez;

drain -eemieetieii Jef'i-e'a. he contact heaters.

8. feed-water heaiiing system @emplee ing ri dosed eenuri header. meanscommunicating wim one end of he heater for suppiyingg; eezxm Lhereh'y'rr surface heniw zirrenged above the commet heater, :1 reminumisiyoperi rent connection imm'eeu the o'her @mi of; che eenne heater :1111!'he em.'- 'nee leuter for Supplying nonemirhnsnhie mees :md u portion ofthe Steam fm the em'- fzsee hez'i'ier, the vent eenueeiue' having auchczqmei'py :1S m aesure the 111:1 portion ex" (mdeiisntien :md heut'ytransfer in the emr met heater" L rnmimwusiy hperl nm-imqiiwriv veut forthe r "face heater, and n 11min wir neetien between the surfer@ um!renin-vt heaters.

In testimony whereof, l have herelmo Subscribed my nume this 5th dey et'lieb', i918.

shrine-e und wir,

